1563315402 has 64 divisors (see below), whose sum is σ = 3620413440. Its totient is φ = 448755120.

The previous prime is 1563315361. The next prime is 1563315407. The reversal of 1563315402 is 2045133651.

1563315402 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1563315402² = 4887910092260843208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1563315402.

It is not an unprimeable number, because it can be changed into a prime (1563315407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146583 + ... + 156885.

It is an arithmetic number, because the mean of its divisors is an integer number (56568960).

Almost surely, 2^1563315402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1563315402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1810206720).

1563315402 is an abundant number, since it is smaller than the sum of its proper divisors (2057098038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1563315402 is a wasteful number, since it uses less digits than its factorization.

1563315402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10360 (or 10338 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1563315402 is about 39538.7835169470. The cubic root of 1563315402 is about 1160.5990272107.

The spelling of 1563315402 in words is "one billion, five hundred sixty-three million, three hundred fifteen thousand, four hundred two".